標題: | Hierarchical tensor approximation of multidimensional visual data |
作者: | Wu, Qing Xia, Tian Chen, Chun Lin, Hsueh-Yi Sean Wang, Hongcheng Yu, Yizhou 資訊工程學系 Department of Computer Science |
關鍵字: | multilinear models;multidimensional image compression;hierarchical transformation;tensor ensemble approximation;progressive transmission;texture synthesis |
公開日期: | 1-一月-2008 |
摘要: | Visual data comprise of multiscale and inhomogeneous signals. In this paper, we exploit these characteristics and develop a compact data representation technique based on a hierarchical tensor-based transformation. In this technique, an original multidimensional data set is transformed into a hierarchy of signals to expose its multiscale structures. The signal at each level of the hierarchy is further divided into a number of smaller tensors to expose its spatially inhomogeneous structures. These smaller tensors are further transformed and pruned using a tensor approximation technique. Our hierarchical tensor approximation supports progressive transmission and partial decompression. Experimental results indicate that our technique can achieve higher compression ratios and quality than previous methods, including wavelet transforms, wavelet packet transforms, and single-level tensor approximation. We have successfully applied our technique to multiple tasks involving multidimensional visual data, including medical and scientific data visualization, data-driven rendering, and texture synthesis. |
URI: | http://dx.doi.org/10.1109/TVCG.2007.70406 http://hdl.handle.net/11536/9917 |
ISSN: | 1077-2626 |
DOI: | 10.1109/TVCG.2007.70406 |
期刊: | IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS |
Volume: | 14 |
Issue: | 1 |
起始頁: | 186 |
結束頁: | 199 |
顯示於類別: | 期刊論文 |